class_docstr: CacheChecker is a component that checks for the presence of documents in a Document Store based on a specified
  cache field.
docstr: Serialize this component to a dictionary.
docstr_tok: ["Serialize","this","component","to","a","dictionary","."]
code: def to_dict(self) -> Dict[str, Any]:
      """
      Serialize this component to a dictionary.
      """
      return default_to_dict(
          self,
          document_store=self.document_store.to_dict(),
          cache_field=self.cache_field,
      )
  
file_path: haystack/haystack/components/caching/cache_checker.py
imports: from typing import List, Dict, Any
  import importlib
  import logging
  from haystack import component, Document, default_from_dict, default_to_dict, DeserializationError
  from haystack.document_stores.types import DocumentStore
label_desc: Use image node_id 2 for calling the CacheChecker obj's underlying member method code with example usage: obj.to_dict() and returns: default_to_dict